US2877284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photovoltaic apparatus
Assignee: RCA Corp
•
Filing: 1950-05-23
•
Granted: 1959-03-10
•
Expires: 1970-05-23
Abstract
No abstract record available.
Inventors
- 👤 Melvin L Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:22
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/10; H10F77/16; H10F77/162; H10F77/1625; H10F99/00; H10F10/00; H10F10/10; H10P; H10P95/00; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A DIRECTIONALLY SENSITVE PHOTPOVLTIC CELL COMPRISING A SUPPORTING BASE OF ELECTRICALLY INSULATING, HEAT RESISTANT MATERIAL, SAID BASE HAVING A SURFACE PROVIDED WITH A FILM COMPRISING A BOTTOM LAYER OF SILVER SULPHIDE AND A TOP LAYER OF LEAD SULPHIDE, SAID TOP LAYER BEING OF SUCH THICHNESS AS BE LIGHT TRANSMITTING, AND SAID TOP LAYER HAVING BEEN ACTIVATED BY HEATING FOR FROM 1 TO 3 HOURS IN THE PRESENCE OF OXYGEN AT A TEMERATURE OF 200* TO 300*C.
Claim 2
Dependent Claim
76 words
A DIRECTIONALLY SENSITVE PHOTPOVLTIC CELL COMPRISING A SUPPORTING BASE OF ELECTRICALLY INSULATING, HEAT RESISTANT MATERIAL, SAID BASE HAVING A SURFACE PROVIDED WITH A FILM COMPRISING A BOTTOM LAYER OF SILVER SULPHIDE AND A TOP LAYER OF LEAD SULPHIDE, SAID TOP LAYER BEING OF SUCH THICHNESS AS BE LIGHT TRANSMITTING, AND SAID TOP LAYER HAVING BEEN ACTIVATED BY HEATING FOR FROM 1 TO 3 HOURS IN THE PRESENCE OF OXYGEN AT A TEMERATURE OF 200* TO 300*C.
References Cited (Backward Citations)
US1919988A
Cited
US929582A
Cited
US1649743A
Cited
US1747664A
Cited
US2030443A
Cited
US2197497A
Cited
US2285058A
Cited
US2402662A
Cited
US2378438A
Cited
US2364642A
Cited
US2445962A
Cited
US2421012A
Cited
US2504627A
Cited
US2543039A
Cited
US2524034A
Cited
US2569347A
Cited
US2588254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |